Lactifer

Lactifer is a Latin-root term that means "milk-bearing." In English, it is most often encountered as part of compound adjectives such as lactiferous, rather than as a standalone word. The root lact- derives from Latin lac or lactis (milk) and the suffix -fer meaning bearing or carrying. As a result, lactifer conveys the idea of something that bears milk.

In anatomy, the related term lactiferous is used to describe ducts and channels that carry milk from the mammary glands to the nipple. The lactiferous ducts begin within the lobules of the breast, converge toward the nipple, and open at the lactiferous openings. The lactiferous sinus is a dilated part of the duct near the nipple where milk can accumulate during lactation. The term is primarily used in medical texts and anatomy references.

In botany, the same root appears in discussions of tissues or structures associated with latex or milky sap. Although the precise term for such plant tissues is typically laticifer or latex-bearing tissue, lactiferous usage appears in historical or less-common descriptions to denote milk-like or latex-exuding conduits. Modern botanical terminology tends to favor laticifers for latex production rather than lactiferous, but the root remains recognizable in related terms.